Schematic Reference: Interior Lights Schematics

Connector End View Reference: Lighting Systems Connector End Views , Computer/Integrating Systems Connector End Views , Power Door Systems Connector End Views

Did you perform the Diagnostic System Check - Vehicle?

Go to Step 2

Go to Diagnostic System Check - Vehicle

Verify that the courtesy/dome lamps are inoperative.

Do the courtesy/dome lamps operate normally?

Go to Testing for Intermittent Conditions and Poor Connections

Go to Step 3

Is only one lamp inoperative?

Go to Step 4

Go to Step 5

Test the voltage supply and ground circuits of the inoperative lamp for an open or high resistance. Refer to Circuit Testing and Wiring Repairs .

Did you find and correct the condition?

Go to Step 15

Go to Step 13

Inspect the following modules for the proper applicable data parameters included in the list below:

Refer to Scan Tool Data List and Scan Tool Data Definitions for typical values and definitions:

Was a problem found?

Go to Step 6

Go to Step 10

Disconnect and test the switch of the affected input circuit for proper continuity in the open and closed positions. Refer to Circuit Testing .

Is continuity present?

Go to Step 7

Go to Step 8

Test the signal and ground circuits of the affected input circuit for the following:

Refer to Circuit Testing and Wiring Repairs

Did you find and correct the condition?

Go to Step 15

Go to Step 9

Inspect for poor connections at the harness connector of the affected switch. Refer to Circuit Testing and Wiring Repairs .

Did you find and correct the condition?

Go to Step 15

Go to Step 11

Inspect for poor connections at the harness connector of the module in the affected circuit. Refer to Circuit Testing and Wiring Repairs .

Did you find and correct the condition?

Go to Step 15

Go to Step 12

Inspect for poor connections at the harness connector of the BCM. Refer to Circuit Testing and Wiring Repairs .

Did you find and correct the condition?

Go to Step 15

Go to Step 14

Replace the switch in the affected circuit. Refer to one of the following replacement procedures as applicable:

Did you complete the replacement?

Go to Step 15

--

Replace the module in the affected circuit. Refer to Control Module References for replacement, setup, and programming.

Did you complete the replacement?

Go to Step 15

--

Replace the inoperative bulb.

Did you complete the repair?

Go to Step 15

--

Replace the BCM. Refer to Control Module References for replacement, setup, and programming.

Did you complete the replacement?

Go to Step 15

--

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3